/*
   AngelCode Scripting Library
   Copyright (c) 2003-2012 Andreas Jonsson

   This software is provided 'as-is', without any express or implied 
   warranty. In no event will the authors be held liable for any 
   damages arising from the use of this software.

   Permission is granted to anyone to use this software for any 
   purpose, including commercial applications, and to alter it and 
   redistribute it freely, subject to the following restrictions:

   1. The origin of this software must not be misrepresented; you 
      must not claim that you wrote the original software. If you use
      this software in a product, an acknowledgment in the product 
      documentation would be appreciated but is not required.

   2. Altered source versions must be plainly marked as such, and 
      must not be misrepresented as being the original software.

   3. This notice may not be removed or altered from any source 
      distribution.

   The original version of this library can be located at:
   http://www.angelcode.com/angelscript/

   Andreas Jonsson
   andreas@angelcode.com
*/


//
// as_builder.h
//
// This is the class that manages the compilation of the scripts
//


#ifndef AS_BUILDER_H
#define AS_BUILDER_H

#include "as_config.h"
#include "as_scriptengine.h"
#include "as_module.h"
#include "as_array.h"
#include "as_scriptcode.h"
#include "as_scriptnode.h"
#include "as_datatype.h"
#include "as_property.h"

BEGIN_AS_NAMESPACE

struct sExplicitSignature
{
	sExplicitSignature(int argCount = 0) : argTypes(argCount), argModifiers(argCount), argNames(argCount), defaultArgs(argCount) {}

	asCDataType returnType;
	asCArray<asCDataType> argTypes;
	asCArray<asETypeModifiers> argModifiers;
	asCArray<asCString> argNames;
	asCArray<asCString *> defaultArgs;
};

struct sFunctionDescription
{
	asCScriptCode *script;
	asCScriptNode *node;
	asCString name;
	asCObjectType *objType;
	sExplicitSignature *explicitSignature;
	int funcId;
	bool isExistingShared;
};

struct sGlobalVariableDescription
{
	asCScriptCode *script;
	asCScriptNode *idNode;
	asCScriptNode *nextNode;
	asCString name;
	asCGlobalProperty *property;
	asCDataType datatype;
	int index;
	bool isCompiled;
	bool isPureConstant;
	bool isEnumValue;
	asQWORD constantValue;
};

struct sClassDeclaration
{
	sClassDeclaration() {script = 0; node = 0; validState = 0; objType = 0; isExistingShared = false; isFinal = false;}

	asCScriptCode *script;
	asCScriptNode *node;
	asCString name;
	int validState;
	asCObjectType *objType;
	bool isExistingShared;
	bool isFinal;
};

struct sFuncDef
{
	asCScriptCode *script;
	asCScriptNode *node;
	asCString name;
	int idx;
};

class asCCompiler;

class asCBuilder
{
public:
	asCBuilder(asCScriptEngine *engine, asCModule *module);
	~asCBuilder();

	// These methods are used by the application interface
	int VerifyProperty(asCDataType *dt, const char *decl, asCString &outName, asCDataType &outType, const asCString &ns);
	int ParseDataType(const char *datatype, asCDataType *result);
	int ParseTemplateDecl(const char *decl, asCString *name, asCString *subtypeName);
	int ParseFunctionDeclaration(asCObjectType *type, const char *decl, asCScriptFunction *func, bool isSystemFunction, asCArray<bool> *paramAutoHandles = 0, bool *returnAutoHandle = 0);
	int ParseVariableDeclaration(const char *decl, asCObjectProperty *var);
	int CheckNameConflict(const char *name, asCScriptNode *node, asCScriptCode *code, const asCString &ns);
	int CheckNameConflictMember(asCObjectType *type, const char *name, asCScriptNode *node, asCScriptCode *code, bool isProperty);

#ifndef AS_NO_COMPILER
	int AddCode(const char *name, const char *code, int codeLength, int lineOffset, int sectionIdx, bool makeCopy);
	int Build();

	int CompileFunction(const char *sectionName, const char *code, int lineOffset, asDWORD compileFlags, asCScriptFunction **outFunc);
	int CompileGlobalVar(const char *sectionName, const char *code, int lineOffset);
#endif

	void WriteInfo(const char *scriptname, const char *msg, int r, int c, bool preMessage);
	void WriteError(const char *scriptname, const char *msg, int r, int c);
	void WriteWarning(const char *scriptname, const char *msg, int r, int c);

protected:
	friend class asCCompiler;
	friend class asCModule;
	friend class asCParser;

	asCObjectProperty *GetObjectProperty(asCDataType &obj, const char *prop);
	asCGlobalProperty *GetGlobalProperty(const char *prop, const asCString &ns, bool *isCompiled, bool *isPureConstant, asQWORD *constantValue, bool *isAppProp);

	asCScriptFunction *GetFunctionDescription(int funcId);
	void GetFunctionDescriptions(const char *name, asCArray<int> &funcs, const asCString &ns);
	void GetObjectMethodDescriptions(const char *name, asCObjectType *objectType, asCArray<int> &methods, bool objIsConst, const asCString &scope = "");

	int  ValidateDefaultArgs(asCScriptCode *script, asCScriptNode *node, asCScriptFunction *func);
	asCString GetCleanExpressionString(asCScriptNode *n, asCScriptCode *file);

	asCString GetScopeFromNode(asCScriptNode *n, asCScriptCode *script, asCScriptNode **next = 0);

#ifndef AS_NO_COMPILER
	int RegisterScriptFunction(int funcID, asCScriptNode *node, asCScriptCode *file, asCObjectType *object = 0, bool isInterface = false, bool isGlobalFunction = false, const asCString &ns = "");
	int RegisterScriptFunctionWithSignature(int funcID, asCScriptNode *node, asCScriptCode *file, asCString &name, sExplicitSignature *signature, asCObjectType *object = 0, bool isInterface = false, bool isGlobalFunction = false, bool isPrivate = false, bool isConst = false, bool isFinal = false, bool isOverride = false, bool treatAsProperty = false, const asCString &ns = "");
	int RegisterVirtualProperty(asCScriptNode *node, asCScriptCode *file, asCObjectType *object = 0, bool isInterface = false, bool isGlobalFunction = false, const asCString &ns = "");
	int RegisterImportedFunction(int funcID, asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	int RegisterGlobalVar(asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	int RegisterClass(asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	int RegisterInterface(asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	int RegisterEnum(asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	int RegisterTypedef(asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	int RegisterFuncDef(asCScriptNode *node, asCScriptCode *file, const asCString &ns);
	void CompleteFuncDef(sFuncDef *funcDef);
	void CompileClasses();
	void GetParsedFunctionDetails(asCScriptNode *node, asCScriptCode *file, asCObjectType *objType, asCString &name, asCDataType &returnType, asCArray<asCDataType> &parameterTypes, asCArray<asETypeModifiers> &inOutFlags, asCArray<asCString *> &defaultArgs, bool &isConstMethod, bool &isConstructor, bool &isDestructor, bool &isPrivate, bool &isOverride, bool &isFinal, bool &isShared);
	bool DoesMethodExist(asCObjectType *objType, int methodId, asUINT *methodIndex = 0);
	void AddDefaultConstructor(asCObjectType *objType, asCScriptCode *file);
	asCObjectProperty *AddPropertyToClass(sClassDeclaration *c, const asCString &name, const asCDataType &type, bool isPrivate, asCScriptCode *file = 0, asCScriptNode *node = 0);
	int CreateVirtualFunction(asCScriptFunction *func, int idx);
	void ParseScripts();
	void RegisterTypesFromScript(asCScriptNode *node, asCScriptCode *script, const asCString &ns);
	void RegisterNonTypesFromScript(asCScriptNode *node, asCScriptCode *script, const asCString &ns);
	void CompileFunctions();
	void CompileGlobalVariables();
#endif

	asCObjectType     *GetObjectType(const char *type, const asCString &ns);
	asCScriptFunction *GetFuncDef(const char *type);
	asCObjectType     *GetObjectTypeFromTypesKnownByObject(const char *type, asCObjectType *currentType);

	int GetEnumValueFromObjectType(asCObjectType *objType, const char *name, asCDataType &outDt, asDWORD &outValue);
	int GetEnumValue(const char *name, asCDataType &outDt, asDWORD &outValue, const asCString &ns);

	struct preMessage_t
	{
		bool isSet;
		asCString message;
		int r;
		int c;
	} preMessage;

	int numErrors;
	int numWarnings;

	asCArray<asCScriptCode *>              scripts;
	asCArray<sFunctionDescription *>       functions;
	asCArray<sGlobalVariableDescription *> globVariables;
	asCArray<sClassDeclaration *>          classDeclarations;
	asCArray<sClassDeclaration *>          interfaceDeclarations;
	asCArray<sClassDeclaration *>          namedTypeDeclarations;
	asCArray<sFuncDef *>                   funcDefs;

	asCScriptEngine *engine;
	asCModule *module;

	asCDataType CreateDataTypeFromNode(asCScriptNode *node, asCScriptCode *file, const asCString &implicitNamespace, bool acceptHandleForScope = false, asCObjectType *currentType = 0);
	asCDataType ModifyDataTypeFromNode(const asCDataType &type, asCScriptNode *node, asCScriptCode *file, asETypeModifiers *inOutFlag, bool *autoHandle);
};

END_AS_NAMESPACE

#endif
